Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape L; triangle T(n,k), n>=0, 0<=k<=n, read by rows.
A247704
Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape L; triangle T(n,k), n>=0, 0<=k<=n, read by rows.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =3a(4) =0a(5) =2a(6) =36a(7) =16a(8) =4a(9) =0a(10) =177a(11) =220a(12) =100a(13) =0a(14) =4a(15) =1300a(16) =1720a(17) =816a(18) =144a(19) =26a(20) =0a(21) =8866a(22) =11152a(23) =5616a(24) =1784a(25) =524a(26) =0a(27) =8a(28) =54849a(29) =85016
External references
- oeis: A247704